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Wikipedia

SVG filter effects

SVG filter effects are effects applied to Scalable Vector Graphics (SVG) files. SVG is an open-standard XML format for two-dimensional vector graphics as defined by the World Wide Web Consortium (W3C). A filter effect consists of a series of graphics operations that are applied to a given source vector graphic to produce a modified bitmapped result.

Filter Effects
Filter Effects Module Level 1
Wood texture and drop shadow simulated with SVG filters
StatusWorking Draft (WD)
Year started15 October 2012 (2012-10-15)
First published15 October 2012 (2012-10-15)
Latest versionDecember 18, 2018 (2018-12-18)
Preview versionEditor's Draft
October 30, 2019 (2019-10-30)
OrganizationW3C
CommitteeCSS Working Group
Editors
  • Dirk Schulze
  • Dean Jackson
  • Vincent Hardy
  • Erik Dahlström
DomainVisual effects

Filter effects are defined by filter elements. The filter property is set on a container element or on a graphics element to apply a filter effect to it. Each filter element contains a set of filter primitives as its children. Each filter primitive performs a single fundamental graphical operation (e.g., a Gaussian blur or a lighting effect) on one or more inputs, producing a graphical result. Because most of the filter primitives represent some form of image processing, in most cases the output from a filter primitive is a single RGBA bitmap image (however, it will be regenerated if a higher resolution is called on).

The original source graphic or the result from a filter primitive can be used as input into one or more other filter primitives. A common application is to use the source graphic multiple times. For example, a simple filter could replace one graphic for two by adding a black copy of the original source graphic but offset to create a drop shadow. In effect, there are now two layers of graphics, both with the same original source graphics.

SVG filter primitives edit

 
Example SVG using various filter primitives
Textures: feTurbulence, feDiffuseLighting, feDistantLight, feComposite and feBlend
Shadows: feGaussianBlur, feOffset, feColorMatrix and feBlend
 
Demonstration of an animated refraction effect using feTurbulence, feDisplacementMap and Synchronized Multimedia Integration Language

The following table lists the filter primitives available in both SVG 1.0 and SVG 1.1. SVG Tiny does not support filter effects, while SVG Basic supports only those filter primitives shown:

Name Element SVG Basic
Blend feBlend Yes
Color matrix feColorMatrix Yes
Component transfer feComponentTransfer Yes
Composite feComposite Yes
Convolve matrix feConvolveMatrix No
Diffuse lighting feDiffuseLighting No
Displacement map feDisplacementMap No
Flood feFlood Yes
Gaussian blur feGaussianBlur Yes
Image feImage Yes
Merge feMerge Yes
Morphology feMorphology No
Offset feOffset Yes
Specular lighting feSpecularLighting No
Tile feTile Yes
Turbulence feTurbulence No

The current draft of the Filter Effects Module Level 1 adds a filter primitive for drop shadow. This primitive, feDropShadow, is just a shorthand for a combination of other filter primitives.[1]

Framework for applying a filter edit

<?xml version="1.0"?> <svg xmlns="http://www.w3.org/2000/svg"  version="1.1"  viewBox="0 0 400 300">  <defs>  <filter id="AFilter">  <!-- Definition of filter goes here -->  </filter>  </defs>  <text x="10" y="100" filter="url(#AFilter)">a filter applied</text> </svg> 

External links edit

  • Filter Effects – SVG 1.1 (Second Edition) W3C specifications
  • W3C SVG primer: Filters W3C Primer (draft) chapter and examples concerning filters.
  • FILDROP A set of custom SVG filter effects and generator filter effects
  • SVG Filter Builder An interactive, visual SVG filter programming tool which can be used both for visualising existing filters (by uploading a SVG) but also to design your own from scratch and save them.

References edit

  1. ^ Schulze, Dirk; Jackson, Dean, eds. (18 December 2018). "Filter Effects Module Level 1". www.w3.org. Retrieved 2023-01-14.

filter, effects, effects, applied, scalable, vector, graphics, files, open, standard, format, dimensional, vector, graphics, defined, world, wide, consortium, filter, effect, consists, series, graphics, operations, that, applied, given, source, vector, graphic. SVG filter effects are effects applied to Scalable Vector Graphics SVG files SVG is an open standard XML format for two dimensional vector graphics as defined by the World Wide Web Consortium W3C A filter effect consists of a series of graphics operations that are applied to a given source vector graphic to produce a modified bitmapped result Filter EffectsFilter Effects Module Level 1Wood texture and drop shadow simulated with SVG filtersStatusWorking Draft WD Year started15 October 2012 2012 10 15 First published15 October 2012 2012 10 15 Latest versionDecember 18 2018 2018 12 18 Preview versionEditor s DraftOctober 30 2019 2019 10 30 OrganizationW3CCommitteeCSS Working GroupEditorsDirk Schulze Dean Jackson Vincent Hardy Erik DahlstromDomainVisual effectsFilter effects are defined by filter elements The filter property is set on a container element or on a graphics element to apply a filter effect to it Each filter element contains a set of filter primitives as its children Each filter primitive performs a single fundamental graphical operation e g a Gaussian blur or a lighting effect on one or more inputs producing a graphical result Because most of the filter primitives represent some form of image processing in most cases the output from a filter primitive is a single RGBA bitmap image however it will be regenerated if a higher resolution is called on The original source graphic or the result from a filter primitive can be used as input into one or more other filter primitives A common application is to use the source graphic multiple times For example a simple filter could replace one graphic for two by adding a black copy of the original source graphic but offset to create a drop shadow In effect there are now two layers of graphics both with the same original source graphics Contents 1 SVG filter primitives 2 Framework for applying a filter 3 External links 4 ReferencesSVG filter primitives edit nbsp Example SVG using various filter primitives Textures feTurbulence feDiffuseLighting feDistantLight feComposite and feBlend Shadows feGaussianBlur feOffset feColorMatrix and feBlend nbsp Demonstration of an animated refraction effect using feTurbulence feDisplacementMap and Synchronized Multimedia Integration LanguageThe following table lists the filter primitives available in both SVG 1 0 and SVG 1 1 SVG Tiny does not support filter effects while SVG Basic supports only those filter primitives shown Name Element SVG BasicBlend feBlend YesColor matrix feColorMatrix YesComponent transfer feComponentTransfer YesComposite feComposite YesConvolve matrix feConvolveMatrix NoDiffuse lighting feDiffuseLighting NoDisplacement map feDisplacementMap NoFlood feFlood YesGaussian blur feGaussianBlur YesImage feImage YesMerge feMerge YesMorphology feMorphology NoOffset feOffset YesSpecular lighting feSpecularLighting NoTile feTile YesTurbulence feTurbulence NoThe current draft of the Filter Effects Module Level 1 adds a filter primitive for drop shadow This primitive feDropShadow is just a shorthand for a combination of other filter primitives 1 Framework for applying a filter edit lt xml version 1 0 gt lt svg xmlns http www w3 org 2000 svg version 1 1 viewBox 0 0 400 300 gt lt defs gt lt filter id AFilter gt lt Definition of filter goes here gt lt filter gt lt defs gt lt text x 10 y 100 filter url AFilter gt a filter applied lt text gt lt svg gt External links editFilter Effects SVG 1 1 Second Edition W3C specifications W3C SVG primer Filters W3C Primer draft chapter and examples concerning filters FILDROP A set of custom SVG filter effects and generator filter effects SVG Filter Builder An interactive visual SVG filter programming tool which can be used both for visualising existing filters by uploading a SVG but also to design your own from scratch and save them References edit Schulze Dirk Jackson Dean eds 18 December 2018 Filter Effects Module Level 1 www w3 org Retrieved 2023 01 14 Retrieved from https en wikipedia org w index php title SVG filter effects amp oldid 1167819242, wikipedia, wiki, book, books, library,

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